China is launching an investigation of Tetra Pak International, the latest in a growing roster of foreign firms under scrutiny for antimonopoly practices.

BEIJING—China is starting an investigation of Swiss packaging maker Tetra Pak International, the latest in a growing roster of foreign companies under scrutiny here for possible anticompetitive behavior.

Tetra Pak, which makes packaging for beverage and dairy companies that sell their products in China, is suspected of "abusing" its market position, Zhang Mao, the head of China's State Administration of Industry and Commerce, said in a speech, the transcript of which was posted on the agency's website Friday....